How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
The Siemens LOGO! 230RCE (6ED1052-1FB08-0BA2) is a compact logic module with an integrated 115/230 V AC/DC power supply, 8 digital inputs, and 4 relay outputs, plus a program memory of 400 function blocks. It adds an Ethernet port with an integrated web server, MQTT connectivity, and data logging for standalone or supervised small-automation tasks.
The 230RCE variant pairs a 115/230 V AC/DC supply with relay outputs rated up to 10 A resistive load, so it can switch small motors, valves, or lighting circuits directly without an external contactor. Choose it over LOGO! variants without Ethernet when the application needs the integrated web server, data logging, or MQTT reporting to a supervisory system rather than local logic control alone.
Typical uses include small machine control, building and lighting automation, and pump or valve sequencing that benefits from remote monitoring through the built-in web server or MQTT without a separate PLC and HMI.
| with display | Yes |
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| Mounting | on 35 mm DIN rail, 4 spacing units wide |
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| Rated value (DC): 115 V DC | Yes |
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| Rated value (DC): 230 V DC | Yes; 240 V DC |
| permissible range, lower limit (DC) | 100 V |
| permissible range, upper limit (DC) | 253 V |
| Rated value (AC): 115 V AC | Yes |
| Rated value (AC): 230 V AC | Yes; 240 V AC |
| Line frequency: permissible range, lower limit | 47 Hz |
| Line frequency: permissible range, upper limit | 63 Hz |
| Part number | 6ED1052-1FB08-0BA2 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4034106034436 |
| ETIM class | EC001417 |
| eCl@ss | 27242216 |
| Time switching clocks: Number | 400; Max. 400, function-specific |
|---|---|
| Time switching clocks: Power reserve | 480 h |
| Number of digital inputs | 8 |
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| Number of digital outputs | 4; Relays |
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| Short-circuit protection | No; external fusing necessary |
| Relay outputs Switching capacity of contacts: with inductive load, max. | 3 A |
| Relay outputs Switching capacity of contacts: with resistive load, max. | 10 A |
| Emission of radio interference acc. to EN 55 011: Limit class B, for use in residential areas | Yes; Radio interference suppression according to EN55011, Limit Value Class B |
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| Siemens Eco Profile (SEP) | Siemens EcoTech |
|---|---|
| CE mark | Yes |
| CSA approval | Yes; covered by UL cert |
| UL approval | Yes |
| FM approval | Yes |
| developed in accordance with IEC 61131 | Yes |
| according to VDE 0631 | Yes |
| Marine approval | Yes |
| Ecological footprint: environmental product declaration Global warming potential | Yes |
| Ecological footprint: global warming potential, (total) [CO2 eq] | 124 kg |
| Ecological footprint: global warming potential, (during production) [CO2 eq] | 9.93 kg |
| Ecological footprint: global warming potential, (during operation) [CO2 eq] | 115 kg |
| Ecological footprint: global warming potential, (after end of life cycle) [CO2 eq] | -0.383 kg |
| Ambient temperature during operation: min. | -20 °C; No condensation |
|---|---|
| Ambient temperature during operation: max. | 55 °C |
| Ambient temperature during storage/transportation: min. | -40 °C |
| Ambient temperature during storage/transportation: max. | 70 °C |
| Altitude during operation relating to sea level: Ambient air temperature-barometric pressure-altitude | Tmin ... Tmax at 1 080 hPa ... 795 hPa (-1 000 m ... +2 000 m) |
| Width | 71.5 mm; 4 modular widths (MW) |
|---|---|
| Height | 90 mm |
| Depth | 60 mm |
| Net weight | 0.274 kg |
|---|---|
| Country of origin | CN |
| Shipping weight | 0.774 kg |
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | In stock |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated operational voltage of 6ED1052-1FB08-0BA2 is 115–230 V AC.
The tariff (HS) code on file for 6ED1052-1FB08-0BA2 is 85371091.
The EAN (GTIN) of 6ED1052-1FB08-0BA2 is 4034106034436.
6ED1052-1FB08-0BA2 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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